The Food Standards Agency recommends that a healthy adult not exceed 10 mg of CBD per day from all sources combined. The following sections detail the exact calculation of your dose and the titration method to follow.
In short:
- The maximum recommended dose for a healthy adult is 10 mg of CBD per day, from all sources combined, according to the Food Standards Agency.
- Dosages vary depending on use, weight and individual sensitivity, with lower thresholds for beginners or sensitive individuals.
- The precise calculation of the dose is based on the concentration, the volume of the bottle and the number of drops, taking into account the bioavailability according to the route of administration.
- Gradual titration over 2 to 4 weeks allows you to find your optimal dose without exceeding the safety threshold, by monitoring the effects and sensations.
- It is advisable to favour certified products with a certificate of analysis, respecting traceability and containing less than 0.3% THC.
Table of Contents
- Understanding CBD levels: percentage, mg/ml and practical implications
- What percentage depending on the use: stress, sleep, pain, and vaping
- Calculate your dose: formulas, conversions and step-by-step examples
- Safety and limitations: FSA recommendations and interactions to be aware of
- Titration: the 2-4 week method to find your dose
- Choosing a reliable product: certificate of analysis, terpenes and traceability
- Expert perspective by Daniel and Lord Of CBD resources
- Regulatory variations: what changes between France and Europe
- What the CBD market still underestimates
- Our recommended tools and products for applying these guidelines
- Sources
- Frequently Asked Questions
Understanding CBD levels: percentage, mg/ml and practical implications
It is this conversion, from percentage to milligrams per milliliter, that allows us to compare two products sold in different formats.
For an e-liquid, bioavailability changes depending on the route of absorption: the WHO report places the oral bioavailability of CBD around 6%, while inhalation makes a larger proportion pass into the blood, faster.
- Sublingual (oil under the tongue): gradual absorption, effect felt in 15 to 45 minutes.
- Inhalation (vaped e-liquid): faster passage into the bloodstream, effect felt within minutes.
- Ingestion (capsules, infusions): passage through the liver, delayed effect but often longer.
The CBD oil dosage calculator does this conversion automatically if you prefer to avoid manual calculation.
What percentage depending on the use: stress, sleep, pain, and vaping
The right dosage depends less on the desired outcome than on the individual's profile: weight, individual sensitivity, and prior experience with CBD are just as important as the intended use. A beginner almost always benefits from starting at a lower dose than a regular user, regardless of the reason.
- Stress and occasional relaxation : a 5% oil is usually sufficient for a first try.
- Sleep : some users rise to around 10% after a titration phase, when taken in the evening.
- Chronic pain : clinical trials identified in a systematic review published on PubMed use average doses around 19.8 mg per day, with a strength of evidence considered low to moderate.
- Vaping : strong e-liquids (over 10%) require suitable equipment and correct dilution, otherwise there is a risk of rapid overdose per puff.
Weight and individual sensitivity play a significant role: a person of low weight or unfamiliar with cannabinoids often experiences the effects of a lower dose than someone with a larger build or a regular user. The very high dosages used in certain medical protocols, between 100 and 800 mg per day according to the WHO, are subject to therapeutic supervision and are not intended for general public use as a dietary supplement.
Pro tip: Note the rate, time of intake and the effect felt over three days before changing the dose: this avoids confusing the effect of the product with current fatigue.
Calculate your dose: formulas, conversions and step-by-step examples
The calculation is based on three pieces of information: the percentage indicated, the volume of the bottle, and the number of drops per milliliter.
- Convert the percentage to mg/ml : multiply the percentage by 10. A 10% oil gives 100 mg/ml.
- Calculate the total amount in the bottle : multiply this result by the volume. A 10 ml bottle at 10% therefore contains 1000 mg of CBD in total.
- To find the dose per drop : divide the mg/ml by the number of drops per millilitre, usually 20. For 10% oil, this gives 5 mg per drop.
- Check on an e-liquid : a bottle of 300 mg in 10 ml is equivalent to 30 mg/ml, which is about three times less concentrated than a 10% oil.
These calculations are for illustrative purposes only: always refer to the actual concentration indicated on your bottle. The internal guide on CBD oil dosage provides further examples depending on the product size.
One point often forgotten: if you use several CBD products in the same day, oil in the morning and e-liquid in the evening for example, add up the milligrams of each source to know your real total before comparing it to a safety threshold.
Safety and limitations: FSA recommendations and interactions to be aware of
The Food Standards Agency sets a precautionary limit of 10 mg of CBD per day for a healthy adult, which corresponds to approximately 4 or 5 drops of a 5% oil. The FSA's report RP521 specifies that this provisional daily intake applies to CBD with a purity of at least 98% and recommends specific warnings for certain groups.
Pregnant or breastfeeding women, those taking regular medication, and those with liver disease should consult a healthcare professional before taking CBD. CBD can slow the activity of certain liver enzymes in the CYP450 group, which alters how the body processes other medications taken concurrently: this is something to discuss with a doctor or pharmacist before combining CBD with any ongoing treatment.
Titration: the 2-4 week method to find your dose
Titration involves gradually increasing the dose until the desired effect is achieved, without ever exceeding the precautionary threshold.
- Week 1 : Start with a low dose, for example 2.5 mg twice a day, and note the effects in a notebook.
- Week 2 : If nothing happens, increase by one level, often by an additional 2.5 to 5 mg.
- Weeks 3 and 4 : continue with weekly increments until you find the appropriate threshold, without exceeding the daily precautionary limit.
The desired relief is usually achieved within this two- to four-week window. Digestive discomfort, excessive drowsiness, or marked dry mouth indicate that it's time to reduce the dosage rather than continuing. The page dedicated to titration for chronic pain details a protocol adapted to this specific use.
Pro tip: Always keep the same product during the titration phase: changing brands or spectrums mid-process makes it impossible to compare effects.
Choosing a reliable product: certificate of analysis, terpenes and traceability
The percentage displayed on the label says nothing about the product's actual quality. The Certificate of Analysis (COA) issued by an independent third-party laboratory confirms the actual CBD content, the absence of contaminants, and a THC level that complies with regulations.
- Verify that the COA corresponds to the batch number of your bottle, not a generic batch.
- Look at the mg per dose mention on the label, not just the overall percentage.
- Check the origin of the hemp and ensure that the THC level is less than 0.3%.
- Look for the presence of terpenes in the product information: they contribute to the perceived effect, regardless of the percentage of CBD displayed.
Two oils with the same percentage can produce different sensations depending on their terpene profile and the presence of other cannabinoids. The guide to choosing a quality CBD oil details how to read a product information sheet in its entirety.
Expert perspective by Daniel and Lord Of CBD resources
Lord Of CBD selects organic hemp producers and guarantees a THC level always below 0.3% in its oils and e-liquids, with a certificate of analysis available for each batch. This traceability requirement is just as important as the percentage displayed on the bottle, as two products with the same THC level can differ significantly in actual purity. To apply the calculations presented above, the CBD oil dosage calculator and the detailed dosage guide remain the two most useful resources for translating these guidelines to your own bottle.
Regulatory variations: what changes between France and Europe
The legal framework for CBD is not the same from one country to another, even within the European Union.
Italy has experienced more turbulent regulatory changes regarding the sale of raw hemp flowers, a reminder that a product's legal status can change and that it's always best to check the regulations in force in your own country before making any cross-border purchases. Mandatory labeling, however, is tending towards harmonization at the European level: the packaging must include information on the CBD content, THC content, hemp origin, and usage precautions. The guide on labeling requirements in Europe details these requirements country by country.
No specific level of CBD is prohibited in legally marketed products: it is the level of THC that is subject to the main regulatory control, the percentage of CBD being more a matter of concentration choice than a question of legality.
What the CBD market still underestimates
Most guides treat the percentage of CBD as the only variable that matters, whereas the terpene profile, the purity of the product and the regularity of intake often have just as much weight on the perceived result.
The other blind spot is the confusion between the doses used in clinical trials and those suitable for daily use as a dietary supplement: high-dose medical protocols correspond to a specific therapeutic framework and should not be replicated in a wellness routine without medical advice. My takeaway from this topic is that slow titration almost always outperforms choosing the highest concentration available on the shelf. The first reflex to correct is to stop searching for the “perfect” percentage and start observing your own response, week after week.
— Daniel
Our recommended tools and products for applying these guidelines
Once your target rate has been identified, you still need to find a product whose traceability and potency match what you are looking for.
- The site's homepage displays all CBD oils, e-liquids and resins , classified by concentration.
- For personalized advice on the rate best suited to your situation, the team can still be reached via the Lord Of CBD contact.
Sources
The dosage recommendations in this article are based on the Food Standards Agency and its RP521 report for safety, a PubMed review and a synthesis published on PMC for the state of the evidence on pain, and the WHO report for the pharmacology of CBD. These documents detail the methodologies and limitations that this summary cannot fully cover.
This article provides general information and is not a substitute for professional medical advice. Consult a qualified healthcare professional about your specific situation before taking any action based on this content.
- Food Fact Check: CBD safety and health claims – Food Standards Agency
- Safety Assessment of Cannabidiol (CBD) as a Novel Food for Use in Food and Food Supplements (RP521)
- PubMed: systematic review on CBD and pain
Frequently Asked Questions
Which CBD should I choose for spondylitis?
No source can recommend a specific dose or product for this precise condition.
Is 20 mg of CBD per day a lot?
Yes, this exceeds the precautionary limit of 10 mg per day set by the Food Standards Agency for a healthy adult. Some clinical protocols use much higher doses for pain relief, but these uses are under medical supervision and not intended for daily consumption as a dietary supplement.
Which CBD should I choose for neck pain?
There is no universally recommended concentration for neck pain specifically. Starting with a low-concentration oil followed by gradual titration remains the most cautious approach, respecting the daily precautionary limit and seeking medical advice if the pain persists.
Which CBD should I choose for tendonitis?
Clinical evidence regarding CBD and musculoskeletal pain such as tendinitis remains limited and not specific to this condition. Topical application or low-dose oral intake, adjusted by titration, corresponds to the general approach described in this guide, but does not replace medical advice or appropriate treatment.